Despite everything in the books, learning the magic seemed far too easy — it didn't seem enough of a challenge. And it contained a variety of "Chuck Norris" elements, with multiple characters having too much perks. In my honest opinion, level over 9000 warrior who is level 9000+ magic user at the very same time is just a no-go. The only "handicap" Eragon had was getting friendzoned by Arya. I'm not counting damages dealt by Durza, this was patched. But that's only one thing. There's also the matter of "what magic can't do?" — In world of Alegesia, it can do pretty much anything, with very few exceptions.